CVE-2026-109162

TYPO3 CMS - Security Misconfiguration in Form Framework

State: Published
Severity: 6.3 Medium
Published: Oct 13, 2026
Updated: Oct 16, 2026
Reserved: Oct 12, 2026

Description

Forms using FileUpload or ImageUpload elements with a custom saveToFileMount configured stored uploaded files in the default storage folder 1:/user_upload/ instead of the configured destination. This could cause uploaded files to end up in a publicly accessible storage even though a restricted, non-public storage had been configured. Files stored this way are served directly, without the access checks applied to non-public storages. Forms that use the default value for saveToFileMount are not affected. This issue affects TYPO3 CMS versions 14.0.0-14.3.8.

Scores

CVSS	Score	Vector	Source
4.0	6.3 Medium	CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N	TYPO3

Weaknesses

CWE-696 Incorrect Behavior Order
CWE-552 Files or directories accessible to external parties

Affected Products

Product	Versions
TYPO3 CMSTYPO3	14.0.0 to before 14.3.9Affected

References

https://news.typo3.com/security/advisory/typo3-core-sa-2026-024vendor-advisory
Git commit of main branchpatch
Git commit of 14.3 branchpatch

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